/* Custom properties for Thred x GitHub/Jekyll aesthetic */
:root {
  /* Github light theme colors */
  --bg-color: #ffffff;
  --text-color: #24292e;
  --text-muted: #586069;
  --link-color: #0366d6;
  --border-color: #e1e4e8;
  --card-bg: #ffffff;
  --card-hover: #fcfcfc;
  --bg-tertiary: #f6f8fa;
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #0d1117;
    --text-color: #c9d1d9;
    --text-muted: #8b949e;
    --link-color: #58a6ff;
    --border-color: #30363d;
    --card-bg: #161b22;
    --card-hover: #1c2128;
    --bg-tertiary: #010409;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
  background-color: var(--card-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background-color: color-mix(in srgb, var(--card-bg) 80%, transparent);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.site-title:hover {
  text-decoration: none;
}

.site-nav ul {
  display: flex;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav li {
  margin: 0;
}
.site-nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.site-nav a:hover,
.site-nav .nav-current a {
  color: var(--text-color);
  text-decoration: none;
}

/* Dropdown Navigation */
.nav-more {
  position: relative;
}
.nav-dropdown-toggle {
  cursor: pointer;
  user-select: none;
}
.nav-dropdown {
  display: none !important;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 8px 0 !important;
  margin-top: 12px !important;
  min-width: 150px;
  flex-direction: column !important;
  gap: 0 !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  z-index: 1000;
}
.nav-dropdown.show,
.nav-more:hover .nav-dropdown {
  display: flex !important;
}
.nav-dropdown li {
  width: 100%;
}
.nav-dropdown a {
  display: block;
  padding: 8px 16px;
  text-transform: none;
  font-size: 0.9rem;
  font-weight: 400;
}
.nav-dropdown a:hover {
  background-color: var(--bg-tertiary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.social-links {
  display: flex;
  gap: 12px;
  align-items: center;
  padding-left: 20px;
  border-left: 1px solid var(--border-color);
}

.social-links a {
  color: var(--text-muted);
  display: flex;
  transition: all 0.2s ease;
}

.social-links a:hover {
  color: var(--text-color);
  transform: translateY(-2px);
}

/* Feed Wrapper */
.site-main {
  padding: 40px 0;
}

.feed-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* Post Cards (Thred-style) */
.feed-post {
  padding: 24px;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: all 0.2s ease;
}

.feed-post:hover {
  border-color: var(--text-muted);
}

.feed-header time {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.feed-title {
  margin: 8px 0;
  font-size: 1.4rem;
  font-weight: 600;
}
.feed-title a {
  color: var(--text-color);
}
.feed-title a:hover {
  color: var(--link-color);
  text-decoration: none;
}

.feed-excerpt {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.feed-image img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 16px;
  border: 1px solid var(--border-color);
}

.feed-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.read-more {
  font-weight: 500;
  font-size: 0.9rem;
}

.feed-tags {
  display: flex;
  gap: 8px;
}

.tag {
  font-size: 0.8rem;
  background: var(--bg-tertiary);
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Single Post (Jekyll-style) */
.single-post {
  padding: 24px 0;
}

.post-title {
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.2;
}

.post-meta {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.post-feature-image img {
  width: 100%;
  border-radius: 12px;
  margin-bottom: 32px;
}

/* Markdown Post Content formatting (gh-content) */
.gh-content h1, .gh-content h2, .gh-content h3 {
  margin-top: 2rem;
  font-weight: 600;
}

.gh-content p {
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

.gh-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.gh-content pre {
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
}
.gh-content :not(pre) > code {
  background-color: var(--bg-tertiary);
  padding: 3px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* Force Highlight.js to use our chosen monospace font */
.hljs, pre[class*="language-"], code[class*="language-"] {
  font-family: var(--font-mono) !important;
}

.gh-content blockquote {
  border-left: 4px solid var(--border-color);
  padding-left: 16px;
  color: var(--text-muted);
  margin-left: 0;
}

.gh-content img {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

/* Footer */
.site-footer {
  margin-top: 64px;
  padding: 32px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.gh-powered {
  margin-top: 8px;
  font-size: 0.8rem;
  opacity: 0.7;
}